Spellcaster multiclassed into spellcaster? How does it work

[John Lynch 106]

I've read the multiclass rules 3 times now and I just don't get it. If a wizard multiclassed into cleric and get the extra spellslots how many divine spell's can they prepare? Can they prepare any divine spell the cleric would be able to?

What if a divine sorcerer multiclassed into cleric? Do they have to prepare those spellslots?

What if a wizard theoretically multiclasses into sorcerer (arcane)? Can they use any spell slot to spontaneously cast a known spell? (I know we don't have these rules yet. But I was wondering if we knew how it would work yet)

[TelemachusScone]

As I understand it the spells act as separate areas. you have your cleric spells and your sorcerer spells and the slots are treated as being unique to the class.
for example: let's say you have 4 levels of sorcerer and have taken wizard dedication and basic wizard spell casting.

You will have 3 first level sorcerer spells and 3 second level sorcerer spells and the corresponding 3 slots for each. This will be your main class (you will also have your four cantrips and an additional first level spell from your bloodline).

Then you will have wizard spells with 4 cantrips, 2 first level wizard spells, and 1 wizard spell slot.

an additional note: you won't be able to heighten your wizard spells in this example, so choose your spells wisely!

[Red Griffyn]

You get 1 slot in your multi-class caster at every level based on when you take the requisite Basic/Expert/Master spell casting feats. A basics spell-caster to spell-caster would get the following secondary access:

L2 - Dedication Feat (taken) - (Know 4 cantrips, can prepare 2, not heightening since you can only cast cantrips).

L4 - Basic Spell Casting Feat (taken) - You get 'know' 2xL1 spells but only have 1 L1 slot to prepare in. (i.e., only 1 level 1 spells per day).

L6 - Basic Spell Casting Feat (previously taken) - You 'know' 2xL2 spells but only have 1 L2 slot to prepare in.

L8 - Basic Spell Casting Feat (previously taken) - You 'know' 2xL3 spells but only have 1 L3 slot to prepare in.

L14 - Expert Spell Casting Feat (taken) - This is a L12 feat, but spell casters don't have a L12 feat so you have to take it at L14. As such, you now know 2xL4 spells and 2xL5 spells, but you only have 1 slot per level (L4/L5) to prepare.

L16 - Expert Spell Casting Feat (previously taken) - You 'know' 2xL6 spells but only have 1 L6 slot to prepare in. Note that the wizard version of this feat has a copy/paste typo from the basic spell casting feat (see the cleric one for the correct wording indicating L16 as when you get L6 spells)

L18 - Master Spell Casting Feat (taken) - You 'know' 2xL7 spells but only have 1 L7 slot to prepare in.

L20 - Master Spell Casting Feat (previously taken) - You 'know' 2xL8 spells but only have 1 L8 slot to prepare in.

L20 - Extra Spell Slot Feat (various names) - If you take this feat, you now have an additional spell slot at L1, L2, L3, L4, L5, and L6 (i.e., 2 lower than your highest slot of L8 in your secondary spell casting class).

Every level you get a new spell level, the cantrips your prepare will auto heighten to the highest spell level (i.e., auto heighten to L3 if you are least L8 and have basic spell casting). Your primary and secondary spell slots/spells known are completely different. The spell casting stat used for determining DCs will be the stat associated with your primary or secondary class (e.g., wis for cleric, int for wizards). The spell slots for your primary class remain the same as identified in the class specific table for your class (every class has the same table, but sorcerer/wizard get extra spells based on bloodline/school, and clerics have their channel pool).

[Darkorin]

Red Griffyn wrote:

L2 - Dedication Feat (taken) - (Know 4 cantrips, can prepare 2, not heightening since you can only cast cantrips).

Every level you get a new spell level, the cantrips your prepare will auto heighten to the highest spell level (i.e., auto heighten to L3 if you are least L8 and have basic spell casting).

You are wrong about the cantrips, they will always be half your level round up.

Here is the logic:

When you take Dedication feat, you don't have spells from the associated class. The rule that apply is the generic cantrip rule:

Cantrips p193 wrote:

" A cantrip is always automatically heightened to the highest level of spell you can cast in the class. This makes a cantrip a 1st-level spell if you can cast 1st-level spells, a 2nd-level spell if you can cast 2nd-level spells, and so on. If you gain access to a cantrip but aren’t normally a spellcaster, your cantrips automatically heightened to half your level, rounded up.

Then when you take basic spellcasting, the best spell you know is of a lower level than half your level rounded up. That is why all of the basic spellcasting multiclass feats overrule the generic cantrip rule with the following text:

Basic spellcasting multiclass feat wrote:

Even though you can cast spells, the spell level of your cleric cantrips and domain is powers half your level rounded up.

[John Lynch 106]

Thanks everyone! This was a big help.